ANTIMICROBIAL PLASTIC COMPOSITIONS AND METHODS FOR PREPARING SAME
First Claim
1. An antimicrobial plastic composition suitable for a non-foam application comprising an antimicrobial compound uniformly dispersed in a plastic,wherein the antimicrobial compound is selected from the group consisting of silanol quaternary ammonium compounds and salts thereof (SQACs) having a hydroxyl or hydrolyzable silane group capable of undergoing a condensation polymerization reaction to form a homo or copolymer and/or forming a covalent bond with the plastic and/or other components in the plastic resin, which optionally forms a homo or copolymer, and/or a covalent bond with the plastic and/or other components.
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Abstract
An antimicrobial plastic composition suitable for any non-foamed application includes an antimicrobial compound uniformly dispersed in a plastic. The antimicrobial compound is selected from the group consisting of silanol quaternary ammonium compounds and salts thereof (SQACs) having a hydroxyl or hydrolyzable silane group capable of undergoing a condensation polymerization reaction to form a homo or copolymer, and/or forming a covalent bond with the plastic and/or other components in the plastic composition. Also described are methods for preparing an antimicrobial plastic composition including: (i) uniformly dispersing an antimicrobial compound in a plastic; (ii) forming a shaped article; and (iii) optionally exposing the shaped article obtained in (ii) to moisture or steam. The antimicrobial plastic composition can provide an article which is non-leaching, environmentally safe, non-toxic, with surface renewability, durable antimicrobial properties and also has improved physical and chemical properties such as tensile strength, static dissipation and chemical resistance.
78 Citations
34 Claims
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1. An antimicrobial plastic composition suitable for a non-foam application comprising an antimicrobial compound uniformly dispersed in a plastic,
wherein the antimicrobial compound is selected from the group consisting of silanol quaternary ammonium compounds and salts thereof (SQACs) having a hydroxyl or hydrolyzable silane group capable of undergoing a condensation polymerization reaction to form a homo or copolymer and/or forming a covalent bond with the plastic and/or other components in the plastic resin, which optionally forms a homo or copolymer, and/or a covalent bond with the plastic and/or other components.
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18. A method for preparing an antimicrobial plastic composition suitable for a non-foam application, comprising:
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(i) uniformly dispersing an antimicrobial compound in a plastic to form an antimicrobial plastic composition; and (ii) thermoforming a shaped article from the antimicrobial plastic composition; and (iii) optionally exposing the shaped article obtained in (ii) to moisture or steam, wherein the antimicrobial compound is selected from the group consisting of silanol quaternary ammonium compounds and salts thereof (SQACs) having a hydroxyl or hydrolyzable silane group capable of undergoing a condensation polymerization reaction to form a homo or copolymer and/or forming a covalent bond with the plastic and/or other components in the plastic composition. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method for preparing an antimicrobial plastic composition suitable for a non-foam application, comprising:
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(i) preparing a graft polymer by mixing a polymer with an antimicrobial compound, a vinyl or acrylic alkoxysilane, and a peroxide, (ii) preparing a master batch concentrate by mixing the polymer with a condensation catalyst, (iii) uniformly mixing the master batch concentrate and the graft polymer and thermoforming the mixture into a shaped article, and (iv) optionally exposing the shaped article obtained in (iii) to moisture or steam, wherein the antimicrobial compound is selected from the group consisting of silanol quaternary ammonium compounds and salts thereof (SQACs) having a hydroxyl or hydrolyzable silane group capable of undergoing a condensation polymerization reaction to form a homo or copolymer and/or forming a covalent bond with the plastic and/or other components in the plastic composition. - View Dependent Claims (34)
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Specification